Hewer said: "It is a huge honour to front Countdown, now recognised by Guinness World Records for its longevity.

"Having 32 years under its belt, I am only a novice, coming up to three years on the show.

"But I and the whole team are incredibly proud to be part of such a durable and intelligent format that relies on intellect rather than prize money."

Craig Glenday, editor-in-chief at Guinness World Records, said: "The show - the first ever shown on Channel 4 - has long been a cornerstone of British popular culture, and its 70 series attest to its class, quality and pure entertainment value.

"It's every bit a part of TV time as the cuppa itself, and I'm looking forward to its next 6,000 episodes."